*{
padding:0px;
margin:0px;
border:none;
}
 
body
{
margin: 0;
padding: 0;
width:100%;
height:100%;
}  
 
 
#logo
{
background-image: url(CAD_LOGO15.png);
width:553px;
height:250px; 
position: absolute;
top: 50%;
left: 50%;
margin-left: -276px;
margin-top: -125px;
}